#include<stdio.h>
int main()
{	   	     	
    int m;

    printf("Input n:\n");
    scanf("%d", &m); //1

    if (m % 2 == 0) //2
        printf("This is an even number.");//1
    else       //2
        printf("This is an odd number.");//1

    return 0;
}	   	  